This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X800-40, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X800-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X800-40
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40
The AirTAC SIJ63X800-40 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 760-800 mm stroke (800 mm is the maximum). The 63 mm bore features a G3/8 port, M16x1.5 rod thread, and 30 mm adjustable cushions. The direct replacement is the SAIJ63X800-40, matching the interface, force, and mounts.
The SAIJ successor retains the ISO 15552 mounting interface for direct reuse of FA, LB, and TC brackets, and upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure. Note this non-magnetic SKU cannot take a switch. At 800 mm, support external guides to prevent rod bending. The stop sets position only; it is not a load lock.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X800-40 |
| Bore size | Ø63 mm |
| Stroke | 800 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ63X800-40 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAIJ63X800-40 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×800 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40 Is Used
Variable Depth Boring
Trimming the 800 mm extend stroke by up to 40 mm on-site allows precise depth control for machining operations without swapping cylinders.
Variable Height Stacking
The 760-800 mm adjustable window provides flexibility for stacking varying pallet heights before reaching the maximum stroke.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40 with the SAIJ63X800-40
To replace the discontinued SIJ63X800-40, order the direct replacement SAIJ63X800-40 (insert A after S). It keeps the 40 mm adjust window (760-800 mm extend) and 63 mm bore. Choose FA, LB, or TC mounting per ISO 15552 interface dimensions. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch; add -S if sensing is needed. For the 800 mm stroke, use external guides to manage side-load and rod-bending. The external stop screw sets end position but is not a lock; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X800-40
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40 FAQ
Yes, the SIJ63X800-40 is discontinued. The direct replacement is the SAIJ63X800-40, which matches the ISO 15552 interface, 800 mm stroke, 40 mm adjust window, G3/8 port, and mounting options.
The external stop screw offers a 40 mm adjust window (usable extend 760-800 mm). It operates at 30-800 mm/s with a G3/8 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X800-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X800-40 replacement — usually within 7-8 hours.